chore(repo): turbo caching improvements and minor packaging simplification

[MarkMcCulloh]

Subset of changes from #3791, avoiding the titular "skip hangar" part.

Primary Goal: Tweak turbo configuration to both more granular and more accurate in general

Changes:

• (turbo) Tests do not effect compile/package output
• (turbo) Stop using src/** when possible, using more specific file extensions
• Make wingc.wasm and docs.tgz part of npm scripts and put the result alongside the other distributables
  • the github workflow was simplified to be able to just upload/download all these dists
• (workflow) Made sure rust only caches in the test workflow, otherwise the build and test workflows fight over the cache
• Fixed Ensure NPM packages are published in the correct order #3842 by explicitly publishing packages in order. Might do something more robust later, but this at least avoids the out-of-order issue
• Deleted several extra license files (projen generated a LICENSE, while we had LICENSE.md as well)

By submitting this pull request, I confirm that my contribution is made under the terms of the Wing Cloud Contribution License.

[mergify]

Thanks for contributing, @MarkMcCulloh! This PR will now be added to the merge queue, or immediately merged if mark/turbo-tweaks-2 is up-to-date with main and the queue is empty.

[mergify]

Thanks for contributing, @MarkMcCulloh! This PR will now be added to the merge queue, or immediately merged if mark/turbo-tweaks-2 is up-to-date with main and the queue is empty.

[monadabot]

Congrats! 🚀 This was released in Wing 0.25.35.